Lennox 34M74 Pressure Switch Els PW 17895 Repeated tripping typically indicates a

Repeated tripping typically indicates a low refrigerant charge

The Sporlan QC-1 features a replaceable design that allows for rapid field service without de-brazing the entire valve body from the liquid line

you can use a longer lead as long as the excess copper tubing is carefully coiled away from the flame and high-heat zones

For technicians troubleshooting furnace short cycling or units that trip on high limit

Lennox 34M74 Pressure Switch Els PW 17895 Repeated tripping typically indicates aThe Lennox 34M74 Pressure Switch is a critical safety component engineered for precision monitoring of combustion air in residential and commercial HVAC systems. This OEM Lennox replacement part features a single pole, single throw (SPST) electrical configuration, meticulously calibrated to an actuation point of . 33" WC (inches water column). Designed with a standard 1 4" barb connection, it ensures a secure, leak proof interface with the inducer